Adjusting means for printing-press rollers.



V. G. MDRGAN.

ADJUSHNG MEANS FOR PRINTING PRESS ROL APPLICATION man APR. \9. ms. neuewzo ma. 6,

LERS.

Patented Sept. 11, 1917.

' fl/l'z nesaesr nous material.

UNITED STATES PATENT OFFICE.

VICTOR G. MORGAN, OF LOS ANGELES, CALIFORNIA, ASSIGNOR, BY DIRECT AND ME SNE ASSIGNMENTS, T0 PARK W. COWAN, OF LOS ANGELES, CALIFORNIA.

ADJUSTING MEANS FOR PRINTING-PRESS ROLLERS.

, Application filed April 19, 1915, Serial No. 22,261.

To all when; it may concern:

Be it known that l, V ic'ron G. MORGAN, a citizen ofthe United States, residing at Los Angeles, in the county of Los 'Angeles and State of California, have invented new and useful Improvements in Adjusting Means for Printing-Press Rollers, of which the following is a specification.

This invention relates to trucks for inking, rollers, and especially pertains to means for adjusting the size. of inking roller trucks.

Inking rollers are generally constructed having an inking surface formed of gelati- In the manufacture of inking rollers of the character above described, it has been found that the diameter of the rollers varies slightly and that different weather conditions also cause variations in the diameter. Trucks now in general use for inking rollers are of metal and of substantially the same diameter for any given size of roller. It has been found in practice that if the roller is less in. diameter than the tracks. the type .are not sullicicntly inked. aml if the roller is larger in diameter than the trucks. slnrring and filling of the. type results aml in time the roller surface is cut.

I obviate these objections by providing trucks which can be adjusted as to their diameter, andproviding means whereby a line adjustment may be made. 'lhe trucks constructed according to my invention are in general of the usual size aml appearance and may be adjusted by an ordinary wrench which is applied to a nut forming a part of the truck.

l attain these objects by the truck illustrated in the accompanying drawing. in which:

Figure l is an elevation of an inking roller broken on the dot. and dash lines. with my improved truck applied thereto. onc truck being shown in vcrtiral section.

Fig. :2 is a perspective view of a truck.

[\lore specifically. 2' indicates a metallic cylilnlrical core which carries a coating l of adjustable trucks 7 Specification of Letters Patent.

diameter. expanding longitudinally.

Patented Sept. 11,1917. Renewed February 6, 1917. Serial No. 146,987.

Each truck comprises a sleeve 15 threaded at one end and carrying at the other end a. collar 16 which is preferably integral with the sleeve. -(7ollat' 16 has a face 17 which converges from the center toward the edges,

forming a wedge surface. A ring 18 of some expansible material'which is in the form of a washer and acts as a tire, is set onto the sleeve 15. The ring i8 is preferably made ofrubber aml has its lateral faces inclined from the center toward the edges to form in cross section a wedge shape. A collar l9 is loosely mounted on the shaft for longitudinal sliding movement and has a face which converges from the center outward. l'ormiin a wedge surface to cooperate with thesurlace on the washer. llngaging collar 1'. is a thin nut :30 the threads of which engage threads on the sleeve l5. Nut it)" is preferably hexagonal in form to form a hold for a wrench.

To increase the diameter of the truck, a. wrench is applied to nut .20 aml the nut: is screwed so that it will force Collar ill toward collar lt'. thereby compressing the tire member lo and expanding it to produce a greater diameter. 'lo decrease the diameter of the truck. the nut '20 is screwed so that it moves away from collar ll ll and the tire member 18 due to its own resiliency decreases in 'It is obviousthat for a given roller the truck may be adjusted in dianu-ter so that the inking roller will bear upon the type with the desired pressure. thereby protecting the roller and assisting in the uality of the work.

What I claim is:-

l. in an inking roller for printing presses, a truck comprising a threaded sleeve. a colla'r secured thereto. a collar slidingly lll' unted on said sleeve. an expansiblc tire ot ring t'orm filling the'space between said collars and of solid elastic material mounted on said sleeve between said collars. aml a nut engaging with the threads on said sleeve and in engagenu-ut with said sliding collar to expand the tire.

2. In an inking roller for printing presses.

a truck comprising a threaded sleeve, a collar having a wedge fave secured thereto, a collar having a wedge fave slidingly 1nounted on said sleeve, an expansihle tire of ring form filling the space between said collars and of solid elastic material mounted on said sleeve between said collars, and a nut engaging with the threads on said sleeve and in engagement with said sliding collar to expand the tire.

In witness that I claim the foregoing I have hereunto subscribed my name this 3rd day of March, 1915.

VICTOR G. MORGAN. 

